Finding the Fourth Proportional to 13,887.04, 19,105.92 and 12,122.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,887.04 : 19,105.92 = 12,122.72 : x
2. Step 2: Convert to fraction form
   13,887.04/19,105.92 = 12,122.72/x
3. Step 3: Cross multiply
   13,887.04x = 19,105.92 × 12,122.72
4. Step 4: Simplify right side
   13,887.04x = 231,615,718.50
5. Step 5: Solve for x
   x = 231,615,718.50/13,887.04
6. Step 6: Final answer
   x = 16,678.55